Combo screw driver head

Details Combo screw driver head Combo screw driver head

1995-05-25

1996-06-25

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81439, B25B 2300

Patent

active

055289665

ABSTRACT:
The present invention describes a new and novel screwdriver head designed for use specifically with combo screws or uni-screws. The screwdriver head has a shank and a head having opposite mounted single straight ribs or blades of the type used on a standard flat-bladed screwdriver, and, perpendicular thereto, a pair of ribs of the Phillips headed screwdriver type. In between the pairs of ribs are recessed areas for connecting with the walls of the combo-screws.

REFERENCES:
patent: 2216381 (1940-10-01), West et al.
patent: 2389129 (1945-11-01), Bishop
patent: 2400684 (1946-05-01), Clark
patent: 3435862 (1969-04-01), Rainey
patent: 4328721 (1982-05-01), Massari
patent: 4488462 (1984-12-01), Wau
patent: 4867018 (1989-09-01), Spector

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